I'm new to this forum and to the fiesta. I don't currently own one but I intend to and I'm doing my research ahead of time, I'm considering a 2014 fiesta st. I'm having difficulty googling results that I'm looking for. Performance wise, is there enough upgrades without rebuilding the engine or upgrading the turbo that would allow me to get around 250 hp? I know there are cold air intakes, FMICs, and cat back exhaust systems, but finding the increase in horsepower is not as easy as I would have thought. Sound is a concern to me but the power and torque are more important to me. I haven't seen any exhaust manifold or headers that are aftermarket. Any suggestions for better cold air intakes, FMICs, and exhaust systems that would maximize performance? Also would I have to get a new engine to handle a more powerful turbo?